Acquired from the Controller Series Software site.
THEOS Corona Version 50182 (CD-ROM Image, Zipped)
THEOS Corona Version 50209 (CD-ROM Image, Zipped)
THEOS, which translates from Greek as "God", is an operating system which started out as OASIS, a microcomputer operating system for small computers that use the Z80 processor. When the operating system was launched for the IBM Personal Computer/AT in 1982, the decision was taken to change the name from OASIS to THEOS, short for THE Operating System.